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Synthesis of the tetrasaccharide repeating unit of the antigen from Klebsiella type 2

✍ Scribed by Anup Kumar Misra; Nirmolendu Roy

Publisher
Elsevier Science
Year
1995
Tongue
English
Weight
484 KB
Volume
278
Category
Article
ISSN
0008-6215

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✦ Synopsis

The disaccharide ethyl 2,4,6-tri-O-acetyl-3-O-(2,3,4,6-tetra-O-benzyl-a-o-glucopyranosyl)-lthio--/3-D-glucopyranoside (6) and methyl 2,6-di-O-benzyl-3-O-(methyl 2,3,4-tri-O-benzyl<t-D-glucopyranosyluronate)-/3-D-mannopyranoside (21) have been synthesized and condensed in the presence of methyl triflate to afford a tetrasaccharide derivative. Removal of protecting groups gaw: methyl 3-O-(methyl O~-D-glucopyranosyluronate)-4-O-(3-O-c~-D-glucopyranosyl-/3-D-glucopyranosyl)-/3-D-mannopyranoside (231, the repeating unit of the antigen from Klebsiella type 2, in the form of its methyl ester methyl glycoside.

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